143022421 has 8 divisors (see below), whose sum is σ = 145381824. Its totient is φ = 140669760.

The previous prime is 143022419. The next prime is 143022433. The reversal of 143022421 is 124220341.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143022421 - 2¹ = 143022419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143022221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57816 + ... + 60238.

It is an arithmetic number, because the mean of its divisors is an integer number (18172728).

Almost surely, 2^143022421 is an apocalyptic number.

It is an amenable number.

143022421 is a deficient number, since it is larger than the sum of its proper divisors (2359403).

143022421 is an equidigital number, since it uses as much as digits as its factorization.

143022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 143022421 is about 11959.1981754631. The cubic root of 143022421 is about 522.9594819614.

Adding to 143022421 its reverse (124220341), we get a palindrome (267242762).

The spelling of 143022421 in words is "one hundred forty-three million, twenty-two thousand, four hundred twenty-one".